Abstract

Ferrocene analogues of pyrrolo[2,1-a]isoquinoline alkaloids, 2-(trifluoromethyl)-5,6-dihydroferroceno[g]indolizine and 6-(trifluoromethyl)-8,9-dihydro-6H-chromeno[4,3-b]ferroceno[g]indolizines, were obtained in 44–65% yield via the Grob reaction between 1-nitro-1-(2,2,2-trifluoroethylidene)alkanes or 3-nitro-2-(trifluoromethyl)-2H-chromenes and 1-alkyl-3,4-dihydroferroceno[c]pyridines in 2-propanol at reflux.

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